Acta Geotechnica / A state-dependent hypoplastic model for methane hydrate-bearing sands

The mechanical behaviors of methane hydrate-bearing sands (MHBS) are largely affected by the presence of methane hydrate, temperature, and pore pressure. In this study, we present a simple hypoplastic model for MHBS. Methane hydrate saturation is included as a state parameter affecting the mechanica...

Full description

Bibliographic Details
Published in:Acta Geotechnica
Main Authors: Liu, Jun, Wang, Shun, Jiang, Mingjing, Wu, Wei
Format: Article in Journal/Newspaper
Language:English
Published: Springer 2021
Subjects:
Critical state
Hypoplastic constitutive model
Methane hydrate
Phase state
Sands
Online Access:https://doi.org/10.1007/s11440-020-01076-7
https://epub.boku.ac.at/doi/10.1007/s11440-020-01076-7
https://resolver.obvsg.at/urn:nbn:at:at-ubbw:3-3064
Description
Summary:The mechanical behaviors of methane hydrate-bearing sands (MHBS) are largely affected by the presence of methane hydrate, temperature, and pore pressure. In this study, we present a simple hypoplastic model for MHBS. Methane hydrate saturation is included as a state parameter affecting the mechanical behaviors of MHBS. A new phase parameter is introduced to account for the coupled effects of temperature and pore pressure on the mechanical behaviors of MHBS. The phase parameter can be determined by a simple function of temperature and pore pressure. Comparison of the predictions with experiments shows that the model is able to capture the salient behaviors of MHBS.

Similar Items